名词
中文翻译：调节阀
同义词：
['control valve', 'throttling device']
例句：
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1. Theregulator is responsible for maintaining the proper pressurein the system.
调节器负责保持系统内适当的压力。
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2. The engineer used a regulatorto adjust the flow rate of the gas.
工程师使用调节器来调整气体的流量。
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3.The regulator was designed to prevent overheating of the engine.
调节器被设计用来防止发动机过热。